EXT=0 : MEXPR

EXT=0 is a top-level command.
Rule to convert equality at type o into an equivalence.
The command format for EXT=0 is:

 <n>EXT=0   P2   P1    R    P     P2-HYPS    P1-HYPS 
"LINE" "LINE" "GWFF" "GWFF" "LINELIST" "LINELIST"


The arguments have the following meaning:
P2 : Line with Equality
P1 : Line with Equivalence
R : Right Equivalent
P : Left Equivalent
P2-HYPS : Hypotheses
P1-HYPS : Hypotheses

ETPS documentation homepage


EXT=0 : SRULE

EXT=0 is an inference rule.
Its priority is 1

ETPS documentation homepage


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